Home / 678,008.31-935,630.38-372,076.82

Finding the Fourth Proportional to 678,008.31, 935,630.38 and 372,076.82

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Solution

The fourth proportional to 678,008.31, 935,630.38 and 372,076.82 is: 513,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,008.31 : 935,630.38 = 372,076.82 : x
  2. Step 2: Convert to fraction form
    678,008.31/935,630.38 = 372,076.82/x
  3. Step 3: Cross multiply
    678,008.31x = 935,630.38 × 372,076.82
  4. Step 4: Simplify right side
    678,008.31x = 348,126,378,833.15
  5. Step 5: Solve for x
    x = 348,126,378,833.15/678,008.31
  6. Step 6: Final answer
    x = 513,454.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.